某挠性接头在路面随机激励下的响应分析

挠性接头是动力调谐陀螺中最薄弱的部分，在断电状态下运输时，陀螺转子上的惯性力及力矩只能由挠性接头承担，挠性接头能否承受运输过程中的振动冲击，直接关系到导弹运输方案的制定。根据某型动力调谐陀螺挠性接头的特点，将它沿挠性细颈处离散成4个刚体，建立了陀螺的离散动力学模型，并用频域法计算了挠性接头在4种实际运输条件下的振动响应。结果表明，运输速度越高、行驶路面越不平，陀螺挠性部分的变形越大，但所讨论的4种实测路面激励所引起的挠性部分的变形及陀螺转子的振动均非常小，不会导致结构破坏，故实施断电运输是安全的。

Response Analysis of a Type of Flexible Joint Under Excitation of Random Road Surface

Flexible joint is the weakest component of a dynamically tuned gyroscope(DTG).When transported without power supply,inertial forces and moments of the DTG rotor will all act on flexible joints.If a missile with this kind of DTG can be transported without power supply or not depends upon the capability of the flexible joint to bear impact and vibration.According to its structural characterisfics,it can be divided into four rigid bodies.A discrete dynamic model of DTG is built up and responses under random road surface loading are calculated in the frequency domain.The results indicate that rougher road and higher transport velocity will lead to stronger vibration of the flexible joint.But the deformations of the neck of the flexible joint induced by four actual random loadings are all very little.So transporting such a missile without power supply is safe.